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    Expert's Opinion

    Calling All Couch Potatoes: This Finger Wrap Can Let You Power Electronics While You Sleep

    A padding of carbon foam electrodes absorbs sweat and converts it into electrical energy.

    Calling All Couch Potatoes: This Finger Wrap Can Let You Power Electronics While You Sleep
    This thin, flexible strip can be worn on a fingertip and generate small amounts of electricity when a person’s finger sweats or presses on it. (Source: University of California San Diego)
    Liezel Labios, University of California San Diego07.15.21
    A new wearable device turns the touch of a finger into a source of power for small electronics and sensors. Engineers at the University of California San Diego developed a thin, flexible strip that can be worn on a fingertip and generate small amounts of electricity when a person’s finger sweats or presses on it.

    What’s special about this sweat-fueled device is that it generates power even while the wearer is asleep or sitting still. This is potentially a big deal for the field of wearables because researchers have now figured out how to harness the energy that can be extracted from human sweat even when a person is not moving.

    This type of device is the first of its kind, said co-first author Lu Yin, a nanoengineering Ph.D. student at the UC San Diego Jacobs School of Engineering. “Unlike other sweat-powered wearables, this one requires no exercise, no physical input from the wearer in order to be useful. This work is a step forward to making wearables more practical, convenient and accessible for

    Continue reading this story and get 24/7 access to Printed Electronics Now for FREE


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